65135233 has 4 divisors (see below), whose sum is σ = 66239280. Its totient is φ = 64031188.

The previous prime is 65135221. The next prime is 65135293. The reversal of 65135233 is 33253156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65135233 - 2¹⁷ = 65004161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65135293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551935 + ... + 552052.

It is an arithmetic number, because the mean of its divisors is an integer number (16559820).

Almost surely, 2^65135233 is an apocalyptic number.

It is an amenable number.

65135233 is a deficient number, since it is larger than the sum of its proper divisors (1104047).

65135233 is a wasteful number, since it uses less digits than its factorization.

65135233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104046.

The product of its digits is 8100, while the sum is 28.

The square root of 65135233 is about 8070.6401852641. The cubic root of 65135233 is about 402.3512210693.

Adding to 65135233 its reverse (33253156), we get a palindrome (98388389).

The spelling of 65135233 in words is "sixty-five million, one hundred thirty-five thousand, two hundred thirty-three".